Roller-thrust-bearing.



H. L. BOCK.

ROLLER THRUST BEARING.

Ar J12 1,177,596. I Patented Apr. 4,1916.

ATTORNEY BY 9mm WWW rev. it w i: I i

HEEIRY L.

'BQCK, 0F TGL'EDG, DEED, ASSIGNOB, I0 WILLIAM EMIL BOOK, 0} TOLEDQ,

OHIQ.

RQLLER- THEUST-BEARINQ Application filed July 16,

The invention relates to roller thrust bearings, and it is the object ofthe invention to obtain a construction in which all contacting portionsof the rolls are ,in, true rolling contact with the cooperatnigsurfaces, and further to obtain self centering constructin. p

in the drawings: Figure 1 is a longitudinal section through the bearing;and Fig. 2 is a transverse section therethrough.

A is a rotatable member such as a shaft and B is a head or flangethereon for transmitting the endthrust to a non-rotating r differentialrotating member C. The members B and C are provided with conical bearingsurfaces converging to a conyfmon point in the axis of the rotatablemember, and between these surfaces are arranged corresponding conicalrolls D. Thus if the rolls are maintained in concentric series andradial relation to the axis of the rotatable member, their surfaces willbe in true rolling contact with the meinbersB and C.

To resist outer displacement of the rolls by the wedging action of thesurfaces C and D thereupon, one of the members such as C is providedwith a surface E for engaging the outerend of each roll. The rolls arealso provided at. their outer ends with enlarged headsF, which engagegrooves or cut-away portions G and H in the members B and C. The outersurface I of the head F is spherical, and: the relative arrangement ofthe same withjrespect to, thesurfacc p M gent to each other, the pointof. tangency lying in the intersection of the cone of which the conicalroll surface is a part with said spherical surface. This will produce atrue rolling contact between'the surfaces E and I, so that the freerotation of the roll is not interfered with.

To render the bearing self centering, I preferably form reversespherical surfaces L upon the rolls D, extending into grooves Kbetweenthe heads F and the conical bearspecification of Letters Patent is suchthat the two surfaces will be tan- Patented A r. a, rats.

Serial No. 709,737.

ing portion. These surfaces J are tangent to a surface J on the memberB, the point of tangent-y being in the circle of projection of theconical surface on the surface J. Thus any lateral stress upon therotatable member in relation to the non-rotataltile member willberesisted 'by the contacting surfaces J and L, as wen as by thesurfaces E and I, so as to maintain the relatively r0 tatableaneinbersalways concentric. if desired each of the members C and B may beprovided with both surfaces E and J, as indicated at the left of Fig. 1.

What I claim as my invention is: l. The combination with relativelyrotatable members having opposed conical sur faces converging to acommon point in the axis of rotation, of a series of conical rollsconcentrically and radially arranged between said surfaces, a head atthe large end of each roll having a spherical surface extendingtransverse to the cone of which the conical bearing surface is a partand upon opposite sides of the intersection of said cone with saidspherical surface, one of said r0- tatable members having a surfacearranged to be tangent to said spherical surface at a point in saidintersect-ion, said surfaces being symmetrical upon opposite sides ofsaid intersection.

2. The combination with relatively rotatable members, having opposedconical surfaces converging to a common point in-the axis of rotation,of conical rolls arranged concentrically and extending radiallybetweenasaid surfaces, a head at the largeend of each roll having aspherical surface transverse to the cone of which the conical rollsurface is a part, said head engaging grooves or cut-away portions insaid relatively rota table members, one of said members having a surfacearranged tangent to said spherical surface at a point in theintersection of said cone with said spherical surface, the opposite endof said roll head having'an opposed spherical surface, and the other ofsaid relatively rotatable members having a surface tangent to saidlast-mentioned spherical surface at a point in the intersection of saidcone with said last-mentioned spherical sursurface converging to a pointin the axis of rotation, an annular bearing surrounding saicl shaftliming a conical surface converging to the same point in the axis ofrotation, conical rolls concentrically and radially a1 ranged betweensaid conical surfaces, a head at the outer encl of each roll separateiflfrom the conical portion thereof by a groove and neck of reduceddiameter, the outer and inner ends of sairl head being provided withspherical surfaces, and cooperating surilices upon nil rel-atirelymovable ineinbers arranged to be tangent to said spherical surfacesatpoints in the intersection of the cone of which the conical roll.surface is a part with said spherical surfaces.

l. The combination witl a rotatable shaft, of an outwardly extendinghead or flange thereon, having a conical surface converging to a pointin the axis of said, shaft, an annular bearing surrmnulinp' Silltl shalt and having a corresgontling conical surface converging to the samepoint in the axis of the shaft, conical rolls arranged concentricallyabout and extending radially from the axis oi the shaft between. saidconical surfaces, an enlarged head at the outer end of each rollengaging grooves or cut-away portions in said rotatable head or flangeand annular bearing nieniber, saicl heads having on their outer andinner encls spherical surfaces, and

surfaces upon saicl rotatable head or flange and annular hearingineinher tangent to said spherical. surfaces at points in the intersecr.of an outwardly-exteinling head or la go thereon hating a conicalsurtace pro e ng to a point in axis oi sairl l lar hearing surrcainclingsaid sha ing a corresponding conical surface e n verging to the samepoint in the axis of the shaft, conical rolls arranged concentricallyabout and extending; radially from the axis of the shaft between saidconical surfaces, an enlarged. head at the end of said rolls, said headhaving on its inner and outer ends spherical surfaces; and surfaces uponsaid rotatable head and annular bearing member tangent to said sphericalsurfac s at points in the intersection of the cone of which the conicalroll surface is a part, with said sgherical surfaces.

testimony whereof l aiiix my in vresence 01 two Witne P H. E. Bowman,

